[5] Sage's career was launched in 2011, when she was cast in the role of Grace on the Nickelodeon series How to Rock,[8] which first aired on February 4, 2012,[9][10] and ran for a single 25-episode season.

In February 2013, Sage was cast in the short-lived NBC television thriller series Crisis, playing Amber, the daughter of Gillian Anderson's character.

[11][12] In 2016, she was cast in a starring role as Alara Kitan on the science-fiction dramedy series The Orville,[13] which premiered on Fox on September 10, 2017.

[14] It was reported in January 2019 that Sage had left the cast of The Orville after the episode "Home", though her departure was considered open-ended for a possible return in the future.

[19] She had a role in the 2014 film Neighbors, playing Zac Efron character's girlfriend Brooke Shy.